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author | Rich Felker <dalias@aerifal.cx> | 2012-11-11 15:38:04 -0500 |
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committer | Rich Felker <dalias@aerifal.cx> | 2012-11-11 15:38:04 -0500 |
commit | 1e21e78bf7a5c24c217446d8760be7b7188711c2 (patch) | |
tree | 83920f2f5aad8bc090ddb55e57f74e062743e592 /src/sched | |
parent | e9b885ee550e8a3eabc9d11c469baf1cfaf64f55 (diff) | |
download | musl-1e21e78bf7a5c24c217446d8760be7b7188711c2.zip musl-1e21e78bf7a5c24c217446d8760be7b7188711c2.tar.gz musl-1e21e78bf7a5c24c217446d8760be7b7188711c2.tar.bz2 |
add support for thread scheduling (POSIX TPS option)
linux's sched_* syscalls actually implement the TPS (thread
scheduling) functionality, not the PS (process scheduling)
functionality which the sched_* functions are supposed to have.
omitting support for the PS option (and having the sched_* interfaces
fail with ENOSYS rather than omitting them, since some broken software
assumes they exist) seems to be the only conforming way to do this on
linux.
Diffstat (limited to 'src/sched')
-rw-r--r-- | src/sched/sched_get_priority_max.c | 5 | ||||
-rw-r--r-- | src/sched/sched_getparam.c | 3 | ||||
-rw-r--r-- | src/sched/sched_getscheduler.c | 3 | ||||
-rw-r--r-- | src/sched/sched_rr_get_interval.c | 1 | ||||
-rw-r--r-- | src/sched/sched_setparam.c | 4 | ||||
-rw-r--r-- | src/sched/sched_setscheduler.c | 4 |
6 files changed, 11 insertions, 9 deletions
diff --git a/src/sched/sched_get_priority_max.c b/src/sched/sched_get_priority_max.c index 64cbca9..30ae510 100644 --- a/src/sched/sched_get_priority_max.c +++ b/src/sched/sched_get_priority_max.c @@ -1,11 +1,12 @@ #include <sched.h> +#include "syscall.h" int sched_get_priority_max(int policy) { - return 0; + return syscall(SYS_sched_get_priority_max, policy); } int sched_get_priority_min(int policy) { - return 0; + return syscall(SYS_sched_get_priority_min, policy); } diff --git a/src/sched/sched_getparam.c b/src/sched/sched_getparam.c index 65be107..76f10e4 100644 --- a/src/sched/sched_getparam.c +++ b/src/sched/sched_getparam.c @@ -1,7 +1,8 @@ #include <sched.h> +#include <errno.h> #include "syscall.h" int sched_getparam(pid_t pid, struct sched_param *param) { - return syscall(SYS_sched_getparam, pid, param); + return __syscall_ret(-ENOSYS); } diff --git a/src/sched/sched_getscheduler.c b/src/sched/sched_getscheduler.c index 4c922f6..394e508 100644 --- a/src/sched/sched_getscheduler.c +++ b/src/sched/sched_getscheduler.c @@ -1,7 +1,8 @@ #include <sched.h> +#include <errno.h> #include "syscall.h" int sched_getscheduler(pid_t pid) { - return syscall(SYS_sched_getscheduler, pid); + return __syscall_ret(-ENOSYS); } diff --git a/src/sched/sched_rr_get_interval.c b/src/sched/sched_rr_get_interval.c index 43bc490..4b01028 100644 --- a/src/sched/sched_rr_get_interval.c +++ b/src/sched/sched_rr_get_interval.c @@ -5,4 +5,3 @@ int sched_rr_get_interval(pid_t pid, struct timespec *ts) { return syscall(SYS_sched_rr_get_interval, pid, ts); } - diff --git a/src/sched/sched_setparam.c b/src/sched/sched_setparam.c index 07d61ae..18623ee 100644 --- a/src/sched/sched_setparam.c +++ b/src/sched/sched_setparam.c @@ -1,8 +1,8 @@ #include <sched.h> +#include <errno.h> #include "syscall.h" int sched_setparam(pid_t pid, const struct sched_param *param) { - static const struct sched_param def; - return syscall(SYS_sched_setparam, pid, &def); + return __syscall_ret(-ENOSYS); } diff --git a/src/sched/sched_setscheduler.c b/src/sched/sched_setscheduler.c index 1958066..4435f21 100644 --- a/src/sched/sched_setscheduler.c +++ b/src/sched/sched_setscheduler.c @@ -1,8 +1,8 @@ #include <sched.h> +#include <errno.h> #include "syscall.h" int sched_setscheduler(pid_t pid, int sched, const struct sched_param *param) { - static const struct sched_param def; - return syscall(SYS_sched_setscheduler, pid, 0, &def); + return __syscall_ret(-ENOSYS); } |